(a) Is 2 ⊆ {2, 4, 6}? (b) Is {3} ∈ {1, 3, 5}?

Database System Concepts
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(a) Is 2 ⊆ {2, 4, 6}?
(b) Is {3} ∈ {1, 3, 5}?

Expert Solution
Step 1:

The symbol indicates set membership and means “is an element of” so that the statement xA means that x is an element of the set A.

The symbol "⊆" means "is a subset of".

Is 2 ⊆ {2, 4, 6}?

In this 2 is not a set.

 Is {3} ∈ {1, 3, 5}?

in this {3} is set not an element 

 

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